import java.text.DateFormat;
import java.text.SimpleDateFormat;
public class Main {
public static void main(String[] args) {
DateFormat df = DateFormat.getDateInstance();
if (df instanceof SimpleDateFormat) {
SimpleDateFormat sdf = (SimpleDateFormat) df;
System.out.println(sdf.toPattern());
} else {
System.out.println("sorry");
}
}
}